acamprosate vs chlorpromazine
PlainMeds reviewed this comparison against our methodology in August 2026. It places FDA and CMS record fields side by side, without recommending either medication.
Side-by-side comparison of acamprosate and chlorpromazine. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Campral
Thorazine
Acamprosate is a medicine that can help you stay away from alcohol if you are alcohol-dependent and have already stopped drinking. It should be used with counseling and support.
Chlorpromazine is a medicine that belongs to a class of drugs called phenothiazine antipsychotics. It can help manage symptoms of certain mental disorders by affecting chemical messengers in the brain.
Acamprosate helps people who are alcohol-dependent to not drink alcohol. You must have already stopped drinking before you start taking acamprosate. This medicine works best when it is part of a complete treatment plan that includes counseling and support.
Chlorpromazine can treat psychotic disorders like schizophrenia. It can also control nausea and vomiting. Additionally, it can help with restlessness before surgery, acute intermittent porphyria, tetanus, manic episodes of bipolar disorder, and intractable hiccups. In children, it can treat severe behavioral problems and hyperactivity.
Acamprosate is similar to a natural substance in your brain. It is thought to work by helping to restore the normal balance of brain activity that is changed by long-term alcohol use. This can reduce your craving for alcohol.
Chlorpromazine works by changing the effect of certain natural chemicals in the brain. It blocks dopamine receptors, which helps to reduce psychotic symptoms. It also affects other neurotransmitters, such as histamine and acetylcholine.
- • Accidental injury
- • Weakness
- • Pain
- • Loss of appetite
- • Diarrhea
- • Drowsiness
- Hypotension 14
- Asthenia 13
- Condition Aggravated 13
- Acute Kidney Injury 12
- Coma 12
- Toxicity To Various Agents 425
- Overdose 345
- Drug Interaction 321
- Neuroleptic Malignant Syndrome 280
- Nausea 272
Acamprosate may increase the risk of suicidal thoughts or actions. Your doctor should watch you for depression or suicidal thoughts. Tell your doctor right away if you have any new or worsening symptoms of depression or suicidal thoughts.
Antipsychotic medicines like chlorpromazine can increase the risk of death in elderly patients who have dementia-related psychosis. Chlorpromazine is not approved for treating this condition.
Acamprosate may harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if acamprosate passes into breast milk. Talk to your doctor if you are breastfeeding.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if chlorpromazine will harm your unborn baby. Talk to your doctor about the risks and benefits of taking this medicine during pregnancy and breastfeeding.
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How to Read This acamprosate vs chlorpromazine Comparison
acamprosate is classified in the GABA Analog (Alcohol Dependence) drug class, while chlorpromazine sits within the Typical Antipsychotic (Phenothiazine) class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, acamprosate has 64 submissions while chlorpromazine has 1,643. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for acamprosate or chlorpromazine.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.